Technical Abstract: Preharvest aflatoxin contamination is a serious challenge facing the U.S. peanut (Arachis hypogaea L.) industry. Indirect selection tools would be valuable in the development of peanut cultivars with resistance to aflatoxin contamination. The objective of this study was to determine if resistance to other fungi could be used as an indirect selection tool for resistance to colonization of peanut by Aspergillus flavus group fungi and (or) aflatoxin contamination. Nine peanut genotypes with resistance to late leafspot [Cercosporidium personatum (Berk. and Curt.) Deighton and (or) white mold (Sclerotium rolfsii Sace.) were evaluated for two years at Tifton, GA and Yuma, AZ. Plots were subjected to late seasoon heat and drought stress. None of genotypes exhibited less colonization of shells or kernels by A. flavus group fungi than Florunner when tested in Georgia or Arizona. None of genotypes showed a reduced level of aflatoxin contamination in comparison to Florunner at either location. These result indicate that the mechanisms of resistance to other fungi operating in these genotypes are not effective in providing resistance to colonization by A. flavus group fungi, or reduced aflatoxin contamination. Therefore, resistance to these fungi cannot be used as an indirect selection tool for resistance to aflatoxin contamination.